JUDITH, K.; BULL, D. Assessing the potential for openness: A framework for examining course-level OER implementation in higher education. Education Policy Analysis Archives, [S. l.], v. 24, p. 42, 2016. DOI: 10.14507/epaa.24.1931. Disponível em: https://epaa.asu.edu/index.php/epaa/article/view/1931. Acesso em: 30 sep. 2022.